CN110152069A - The degradable multiporous iron-based bone plate of one kind and its increasing material manufacturing method - Google Patents
The degradable multiporous iron-based bone plate of one kind and its increasing material manufacturing method Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/02—Inorganic materials
- A61L31/022—Metals or alloys
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/08—Materials for coatings
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L31/146—Porous materials, e.g. foams or sponges
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L31/148—Materials at least partially resorbable by the body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/40—Structures for supporting workpieces or articles during manufacture and removed afterwards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/62—Treatment of workpieces or articles after build-up by chemical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/568—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor produced with shape and dimensions specific for an individual patient
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The present invention relates to a kind of degradable multiporous iron-based bone plate and its increasing material manufacturing methods, wherein, the bone plate includes main part and shoulder portion, and the main part is the porous unit cell array structure being made of multiple micro fine cylindricals, for being bonded fracture site bone；The two sides of main part are arranged in the shoulder portion, for the bone of main part and fracture site to be fixed.The present invention has suitable internal degradation rate and mechanical property, and has good biocompatibility, will not generate murder by poisoning to human body, take out without second operation.
Description
Technical field
The present invention relates to medical bone plate technical field, more particularly to a kind of degradable multiporous iron-based bone plate and its
Increasing material manufacturing method.
Background technique
Currently, medical metal material has been widely used in orthopaedics prosthesis, metal bone fracture plate as usual products,
Its core function is fixed, connection patient's bone injury site, provides mechanics branch for the daily life and simple rehabilitation campaign of patient
On the other hand support can also promote knitting and Bone Defect Repari process.Traditional bone plate is using metals conducts such as stainless steel, titanium alloys
Raw material, the non-degradable in human body needed to carry out second operation taking-up in the Bone Defect Repari later period, existed for patients centainly
Operation risk, and subsequent Bone Defect Repari process may be influenced.In addition, the biocompatibility of some tradition bones plate is not very managed
Think, the alloying elements that some of them are harmful to the human body, such as nickel, chromium, understands in human body and gradually discharge, patient is caused to damage
Evil.Therefore, the excellent metal Medical bone fracture plate with degradable characteristic of biocompatibility has huge application potential.
As medical metal bone fracture plate, mechanical property is to assess an important indicator of bone plate superiority and inferiority.Firstly, synthetism
Metal material used in plate should have enough intensity, can work normally and will not lose under various possible load in vivo
Effect；Secondly, metal material used in bone plate should also have the elasticity modulus being close with skeleton, " stress screening is avoided
Gear " effect, reduces the risk of bone-loss, self bone deterioration or even secondary fracture.
Consider the above two aspect factors, has some researchers at present and degradable metal bone plate is studied.
In Chinese invention patent CN107496020A, researcher is using pure magnesium similar in elasticity modulus and skeleton as raw material
Degradable bone fracture plate has been made, and has been directed to the problem of magnesium intensity deficiency, reinforcing rib protrusion is set on bone plate, is effectively increased
The mechanical property of bone plate entirety.But reinforcing rib structure involved in above-mentioned patent (CN107496020A) is only capable of improving bone plate
Whole intensity, if bone plate local stress is excessive, however it remains the risk of fracture failure.
Chinese invention patent CN109402544A is using laser peening reinforcement technique to magnesium alloy bone plate stress concentration portion
Position is strengthened, and prepares corrosion-resistant finishes in synthetism plate surface by differential arc oxidation, while improving the mechanical property of bone plate
And corrosion resistance.But the processing process that above-mentioned patent (CN109402544A) proposes is complicated, difficulty of processing is big, and for adding
Work parameter has higher required precision, it is difficult to expeditiously make bone plate.
For above situation, corrosion resistance stronger iron more excellent using itself mechanical property connects as degradable metal
The raw material of bone plate.Iron and ferrous alloy have the advantages that following significant: (1) iron is the essential trace elements of the human body, is had emphatically
The physiologic meaning wanted, without bio-toxicity, biocompatibility is excellent；(2) iron intensity is larger, and brittleness is moderate, it is not easy to occur
Fracture has outstanding comprehensive mechanical property and support performance on the whole；(3) iron can oneself in human body corrosive environment
So degradation, without carrying out second operation taking-up.However, iron and ferrous alloy need to solve elasticity modulus mistake as synthetism plate material
The high and excessively slow problem of degradation rate.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of degradable multiporous iron-based bone plate and its increasing material manufacturing sides
Method makes the bone plate of manufacture have suitable internal degradation rate and mechanical property.
The technical solution adopted by the present invention to solve the technical problems is: a kind of degradable multiporous iron-based bone plate is provided,
Including main part and shoulder portion, the main part is the porous cell configuration array being made of multiple micro fine cylindricals, is used
In fitting fracture site bone；The two sides of main part are arranged in the shoulder portion, are used for main part and fracture site
Bone be fixed.
The diameter range of the micro fine cylindrical is 0.3-1.5mm.
The biodegradable antirust painting that the surface of the main part and shoulder portion is coated with a thickness of 2-1000 μm
Layer.
The edge of the main part is rounding corner structure.
It is provided with bone screw holes on the shoulder portion, is half entity with cavity around the bone screw holes position
Structure.
The main part and shoulder portion are all made of straight iron powder or degradable iron(-)base powder using increasing material system
The method made is made, wherein the particle size range of powder is 10-60 μm.
The technical solution adopted by the present invention to solve the technical problems is: a kind of above-mentioned degradable multiporous iron-based bone plate
Increasing material manufacturing method, comprising the following steps:
(1) initial data of fracture site is obtained, and constructs the threedimensional model of fracture site bone；
(2) according to obtained threedimensional model, the bone curved surface of fracture is extracted, as design basis, designs bone plate
Preliminary contours profiles；
(3) according to bone injury situation, position of the bone screw holes on shoulder portion and shoulder portion in main part is determined；
(4) design flexibility modulus and porous cell configuration similar in fracture bone, using three-dimensional software in main part
Array is carried out to designed cell configuration in range, and carries out surface self-adaptive processing in the boundary of main part；
(5) round corner treatment is carried out to bone plate edge sharp parts；
(6) portion cavity processing is carried out to the solid position near bone screw holes by three-dimensional software, is improved to half entity
Structure obtains the porous bone plate three dimensional file of final version；
(7) printing pre-treatment is carried out to the porous bone plate three dimensional file of obtained final version, in order to guarantee precinct laser at
Type prints successfully, need to carry out to porous bone plate three dimensional file plus support processing is so that form support construction on porous bone plate；
(8) the selective laser melting (SLM) molding printing of porous bone plate is carried out；
(9) support construction being attached on porous bone plate is removed after printing, obtains complete porous bone plate.
Further include the steps that coating biodegradable rust-proof coating in porous synthetism plate surface after the step (9).
Further include the steps that porous bone plate is vacuum-packed after the step (9), is added in the vacuum packaging bag
Desiccant.
Beneficial effect
Due to the adoption of the above technical solution, compared with prior art, the present invention having the following advantages that and actively imitating
Fruit: main part of the invention constructs porous cell configuration array using micro fine cylindrical, so that iron-based material on the one hand can be reduced
Bone plate entirety elasticity modulus, the specific surface area of bone plate on the other hand can be improved, thus accelerated degradation.The present invention relates to
Degradable multiporous iron-based bone plate have good biocompatibility will not to human body generate murder by poisoning.It is of the present invention to drop
Solving porous iron-based bone plate can degrade in people or animal body, and have suitable degradation cycle, be not necessarily to second operation
It takes out, it will not be degradable before Bone Defect Repari completion due to degradation rate is too fast.It is of the present invention degradable multiporous iron-based
The increasing material manufacturing method of bone plate can design according to the individual demand at patients with fractures position and manufacture the porous of customization and connect
Bone plate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of bone plate of the present invention；
Fig. 2 is the sectional view of bone plate of the present invention；
Fig. 3 is the exemplary diagram in kind of bone plate produced by the present invention；
Fig. 4 is the application exemplary diagram of bone plate produced by the present invention；
Fig. 5 is micro fine cylindrical diameter when being 1.1mm, the Compressive Mechanical Properties curve graph of 12*12*12mm porous sample；
Fig. 6 is micro fine cylindrical diameter when being 1.5mm, the Compressive Mechanical Properties curve graph of 12*12*12mm porous sample；
Fig. 7 is the Compressive Mechanical Properties curve of the solid sample of 12*12*12mm.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiments of the present invention are related to a kind of degradable multiporous iron-based bone plate, as depicted in figs. 1 and 2, including main body
Part 1 and shoulder portion 2.Wherein, main part 1 is made of for being bonded fracture site bone multiple micro fine cylindricals
Porous cell configuration array, the diameter range of micro fine cylindrical are 0.3-1.5mm, and the diameter of micro fine cylindrical is in present embodiment
0.6mm；The shoulder portion 2 is arranged for main part 1 and the bone of fracture site to be fixed, in main part 1
Two sides, have 4 shoulder portions 2 in present embodiment.Bone screw holes 3 are provided on shoulder portion 2,3 institute of bone screw holes is in place
It is half entity structure 5 with cavity around setting.The main part 1 and shoulder portion 2 are all made of straight iron powder or can drop
The iron(-)base powder of solution is made of the method for increasing material manufacturing, wherein the particle size range of powder is 10-60 μm.The main body
The biodegradable rust-proof coating 4 that part 1 and the surface of shoulder portion 2 are coated with a thickness of 2-1000 μm.
A kind of increasing material manufacturing method of degradable multiporous iron-based bone plate is provided below, comprising the following steps:
(1) fracture site is scanned using CT technology, obtains the initial data of fracture site, in medical image software
Image procossing is carried out to it in Mimics, rebuilds and export the threedimensional model file of fracture site bone STL format；
(2) threedimensional model obtained according to step (1) extracts the bone curved surface of fracture in Three-dimensional Design Software,
As design basis, the preliminary contours profiles of bone plate are designed；The contours profiles of design can be bonded fracture site as shown in Figure 4
Bone.
(3) according to the bone injury situation of sufferer, determine 4 shoulder portion 2 and 4 bone screw holes 3 of bone plate in bone plate
On position, serve and support and fix；
(4) design flexibility modulus is made with porous cell configuration similar in fracture bone with preventing " stress shielding " effect
Array is carried out to designed cell configuration in 1 range of bone plate main part with three-dimensional software, and on 1 boundary of main part
Place carries out surface self-adaptive processing；
(5) round corner treatment is carried out to 1 edge sharp parts of main part, to reduce stress concentration phenomenon.
(6) portion cavity processing is carried out to the solid position near bone screw holes 3 by three-dimensional software, is improved to half entity
Structure 5 obtains the porous bone plate three dimensional file of final version to accelerate the degradation speed on 3 periphery of bone screw holes；
(7) printing pre-treatment is carried out to the porous bone plate three dimensional file of final version that step 6 obtains, in order to guarantee that constituency is swashed
Seterolithography prints successfully, need to porous bone plate three dimensional file carry out it is appropriate plus support processing so that on porous bone plate shape
At support construction；
(8) the selective laser melting (SLM) molding printing of iron-based porous bone plate is carried out, used printed material is straight iron powder
Or the iron(-)base powder that other biological is safe and degradable, 10-60 μm of powder diameter range.
(9) after printing, the support construction being attached on iron-based porous bone plate is removed, is obtained complete iron-based more
Hole bone plate；
(10) the biodegradable rust-proof coating 4 for being 200 μm in iron-based porous synthetism plate surface coating thickness, finally obtains
Iron-based porous bone plate it is as shown in Figure 3；
(11) the iron-based porous bone plate Jing Guo coating treatment is vacuum-packed, is added in vacuum packaging bag appropriate dry
Drying prescription further prevents bone plate to corrode.
For the mechanical property for verifying degradable multiporous iron-based bone plate manufactured in the present embodiment, taken in bone plate length direction
Tensile sample carries out Mechanics Performance Testing to sample, tests the elasticity modulus measured and skeleton elasticity modulus is close, and is strong
The degree limit meets bone plate requirement.Illustrate to conform to using the mechanical property of degradable multiporous iron-based bone plate prepared by the present invention
It asks.
For the degradation property for verifying degradable multiporous iron-based bone plate manufactured in the present embodiment, it is real that degradation is carried out to bone plate
It tests, and the solid iron-based bone plate same with outer profile is compared, experiment measures manufactured in the present embodiment degradable more
The degradation rate of the iron-based bone plate in the hole solid iron-based bone plate same much larger than outer profile, and degradation cycle meets and can drop
Solve the clinical requirement of bone plate.Illustrate to conform to using the degradation property of degradable multiporous iron-based bone plate prepared by the present invention
It asks.
Table 1 show porous pure iron sample degradation weightless test result, and (degradation condition: degradation temperature is 39 degrees Celsius, drop
Solve the time be 34 hours, acid degradation liquid 750ml), degradation weightless test the result shows that with porous pure iron structure specific surface
Product increases, and the weight loss rate (weightlessness accounts for original sample weight percentage) of entire sample obviously increases, illustrates proposed by the present invention
Porous pure iron structure can effectively accelerate the degradation rate of pure iron bone plate.Table 2 is shown using different micro fine cylindrical diameters
Pure iron porous sample theoretical elasticity modulus, specific surface area and porosity, these data explanation by adjust micro fine cylindrical it is straight
It is close with the elasticity modulus of target bone that the elasticity modulus of the adjustable porous pure iron structure of diameter makes it, while adjusting micro fine cylindrical
The specific surface area of the adjustable porous pure iron structure of diameter, and then its degradation rate can be regulated and controled.
The porous pure iron sample degradation weightless test result table of table 1
Theoretical elasticity modulus, the specific surface area and porosity of the pure iron sample of the different micro fine cylindrical diameters of table 2
Fig. 5-7 is respectively that micro fine cylindrical diameter is that 1.1mm, 1.3mm and completely solid 12*12*12mm pure iron are porous
And the Compressive Mechanical Properties curve of solid sample, it can be seen that when micro fine cylindrical diameter be 1.1mm when, porous pure iron sample it is strong
Degree is 117MPa；When micro fine cylindrical diameter is 1.3mm, the intensity of porous pure iron sample is 199MPa, meets the strong of bone plate
Degree requires.
It is not difficult to find that main part of the invention constructs porous cell configuration array using micro fine cylindrical, so that on the one hand
The elasticity modulus that the bone plate entirety of iron-based material can be reduced, on the other hand can improve the specific surface area of bone plate, to accelerate
Degradation.There is degradable multiporous iron-based bone plate of the present invention good biocompatibility will not generate murder by poisoning to human body.
Degradable multiporous iron-based bone plate of the present invention can degrade in people or animal body, and have suitable degradation week
Phase takes out without second operation, will not be degradable before Bone Defect Repari completion due to degradation rate is too fast.It is of the present invention
The increasing material manufacturing method of degradable multiporous iron-based bone plate can be designed and be manufactured according to the individual demand at patients with fractures position
The porous bone plate customized.
Claims (9)
1. a kind of degradable multiporous iron-based bone plate, including main part and shoulder portion, which is characterized in that the main part
For the porous unit cell array structure being made of multiple micro fine cylindricals, for being bonded fracture site bone；The shoulder portion setting
In the two sides of main part, for the bone of main part and fracture site to be fixed.
2. degradable multiporous iron-based bone plate according to claim 1, which is characterized in that the diameter model of the micro fine cylindrical
Enclosing is 0.3-1.5mm.
3. degradable multiporous iron-based bone plate according to claim 1, which is characterized in that the main part and flank section
The surface divided is coated with the biodegradable rust-proof coating with a thickness of 2-1000 μm.
4. degradable multiporous iron-based bone plate according to claim 1, which is characterized in that the edge of the main part is
Rounding corner structure.
5. degradable multiporous iron-based bone plate according to claim 1, which is characterized in that be provided on the shoulder portion
Bone screw holes are half entity structure with cavity around the bone screw holes position.
6. degradable multiporous iron-based bone plate according to claim 1, which is characterized in that the main part and flank section
It point is all made of straight iron powder or degradable iron(-)base powder to be made of the method for increasing material manufacturing, wherein the partial size of powder
Range is 10-60 μm.
7. a kind of increasing material manufacturing method of iron-based bone plate degradable multiporous as described in any in claim 1-6, feature exist
In, comprising the following steps:
(1) initial data of fracture site is obtained, and constructs the threedimensional model of fracture site bone；
(2) according to obtained threedimensional model, the bone curved surface of fracture is extracted, as design basis, designs the first of bone plate
Walk contours profiles；
(3) according to bone injury situation, position of the bone screw holes on shoulder portion and shoulder portion in main part is determined；
(4) design flexibility modulus and porous cell configuration similar in fracture bone, using three-dimensional software in main part range
It is interior that array is carried out to designed cell configuration, and surface self-adaptive processing is carried out in the boundary of main part；
(5) round corner treatment is carried out to bone plate edge sharp parts；
(6) portion cavity processing is carried out to the solid position near bone screw holes by three-dimensional software, is improved to half entity structure,
Obtain the porous bone plate three dimensional file of final version；
(7) printing pre-treatment is carried out to the porous bone plate three dimensional file of obtained final version, in order to guarantee that precinct laser molding is beaten
It is printed as function, porous bone plate three dimensional file need to be carried out plus support processing is so that form support construction on porous bone plate；
(8) the selective laser melting (SLM) molding printing of porous bone plate is carried out；
(9) support construction being attached on porous bone plate is removed after printing, obtains complete porous bone plate.
8. increasing material manufacturing method according to claim 7, which is characterized in that further include being connect porous after the step (9)
Plate surface coats the step of biodegradable rust-proof coating.
9. increasing material manufacturing method according to claim 7, which is characterized in that further include porous synthetism after the step (9)
The step of plate is vacuum-packed, the vacuum packaging bag is interior to be added desiccant.
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| CN201910446561.7A CN110152069A (en) | 2019-05-27 | 2019-05-27 | The degradable multiporous iron-based bone plate of one kind and its increasing material manufacturing method |
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| CN201910446561.7A CN110152069A (en) | 2019-05-27 | 2019-05-27 | The degradable multiporous iron-based bone plate of one kind and its increasing material manufacturing method |
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